-0.2*6x-0.5*6+0.6*3x-0.3=4x-0.6*4-x
-1.2x-3+1.8x-0.3=3x-2.4
0.6x-3.3=3x-2.4
3x-0.6x=-3.3+2.4
2.4x=-0.9
x=-9/24
x=-3/8
3 × 5 + 2 × ( - 2 ) = 11.
1) 3 × 5 = 15;
2) 2 × ( - 2 ) = - 4;
3) 15 + ( - 4 ) = 11.
15 - 4 = 11.
При х=0,4 у=0,4²=0,16 > при х=0,3 у=0,3²=0,09
64^(-5)/(16^(-3)*4^(-9))=2^(-30)/(2^)-12)*2^(-18))
=2^(-30)/2^(-30)=1